If you’ve spent much time at Williamsburg’s go-to gallery, you might have noticed that in the little passage from the main space into the office there’s a tiny hole in the drywall, and if you’ve ever looked into that small opening as you might a telescope, you’ve glimpsed a miniscule pastoral scene, a private little green paradise painstakingly crafted and hidden in the wall behind a lens by Patrick Jacobs. He’ll be embedding a few more small scenes there this month.